The negative pressure fan is a cooling principle of air convection and negative pressure ventilation. It is a kind of machine which can naturally inhale fresh air from the door or window of the installation place, force the indoor muggy gas to expelled outdoors, any bad ventilation problem can be improved, and the cooling effect can reach 90%-97%. CAD/CAM design, with low investment cost, large air volume, low noise, low energy consumption, smooth operation, long life, high efficiency, shutter automatic lifting, waterproof, beautiful and generous; it can blow the wind, but also can draw wind, is the better choice of cooling ventilation in modern workshop. The negative pressure fan with environmental protection and energy saving will become the mainstream of ventilation and cooling equipment market.

Today we'll take a look at what categories of glass fiber reinforced plastics negative pressure fans can be classified according to their classification.

First, from the appearance of the shape

1, trumpet glass steel negative pressure fan. The outlet of the fan is like horn shape. Many people call it a trumpet glass steel negative pressure fan.

2, the square glass fiber reinforced plastic negative pressure fan, the whole fan appears to be square, so it is called the square glass steel negative pressure fan.

Two. From the way of transmission

1, belt type glass steel negative pressure fan: belt type speed in 370-450 turn / minute, use six pole or quadrupole aluminum shell motor protection grade IP55 F grade insulation, low speed product noise is relatively low.

2, direct type glass steel negative pressure fan: direct motor mainly has 12 pole 440 / minute, 10 pole 560 turn / minute, 8 pole 720 / minute three, 12 motor use more, high speed fan noise.

Three. From the material of the wind leaf

1, aluminum alloy wind blade negative pressure fan: the wind blade is made of aluminum alloy material, with 3 leaves and 6 leaves.

2, engineering plastics wind blade negative pressure fan: the wind blade is made of engineering plastic material, and has 6 leaves, 7 leaves and 9 leaves.

3, glass steel wind blade negative pressure fan: wind blade is made of glass fiber reinforced plastic, with 3 leaves and 6 leaves.